Presentation on theme: "Drift-Reducing Nozzles Rich Affeldt Extension Crop Scientist Jefferson County Acknowledgment: Dr. Tom Wolf, Agri-Food Canada Dr. Bob Wolf, Kansas State."— Presentation transcript:
Drift-Reducing Nozzles Rich Affeldt Extension Crop Scientist Jefferson County Acknowledgment: Dr. Tom Wolf, Agri-Food Canada Dr. Bob Wolf, Kansas State University Mark Mellbye, OSU Extension
Quick review: Nozzles Are Labeled by Spray Angle and Output An 8002 is? 80 0 And? 0.2 gpm at 40 psi.
Choosing nozzles is usually a balance between coverage and drift potential.
Drift Guard (DG) Pre-orifice chamber reduces internal nozzle pressure 30-60 psi creates similar amount of fines as normal flat fan at 15-25 psi Higher pressure prevents tailing-off at ends of boom Flat FanDrift Guard
Turbo TeeJet (TT) Pre orifice turbulence chamber Wide angle, flood- type, 15-90 psi Medium to coarse droplets
Volume Median Diameter (VMD) 40 psi 40 psi 40 psi 70 psi % less than 210 Microns 37 51 36 35 45 23 30 14 15 2619 22 14 13 2210 17 29 15 Bob Klein, U of Nebraska Percent fines
On the Internet http://agbiopubs.sdstate.edu/articles/FS919.pdf –Summary of drift reducing nozzles www.bae.ksu.edu/faculty/wolf/ –A leading expert on nozzle technology http://www.teejet.com http://www.turbodrop.com/ –http://aandlsupply.comhttp://aandlsupply.com Regional supplier of GreenLeaf nozzles
VariTarget: Speed variations from 2-20 MPH Application rates of 5-40 GPA Variable area pre orifice Variable area spray orifice Optimize spray droplet size Maintain efficacy and minimize drift